Note, the 11th Missouri Cavalry Langston’s records show his initials as “J. C.”

J C. Langston

Residence was not listed;
Enlisted on 4/1/1864 as a Private.
On 4/1/1864 he mustered into "H" Co. MS 11th Cavalry
(date and method of discharge not given)
(Estimated date of enlistment)

Sources used by Historical Data Systems, Inc.:
- Index to Compiled Confederate Military Service Records

…………

J. C. Langston, age 25, Private, Captain H. L. Muldrow’s Company,* enlisted September 5, 1863 at Columbus, Miss. by Capt. Muldrom for the war, recorded on the Jul/Aug, 1864 muster roll as absent, Paroled state Prisoner, no further records

Note, there are no later Company H muster rolls in the records

* This company subsequently became Company H, Perrin’s Regiment, Mississippi Cavalry, which was also known as the 11th Regiment Mississippi Cavlary

M269 Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Mississippi